Problem

By default the Joomla package size is limited in the in JAI (Joomla Administrator Interface) to 2 MB.

In case of an upload for updating a package bigger than 2 MB (EasyBlog for example), the upload will fail because of the size restriction.

Error message displayed: "This file is too large to upload."
or
"There was an error uploading this file to the server."

Resolution

This can be solved by adjusting a bigger size within the upload_max_file size and post_max_size variables in the php.ini.
The php.ini used and loaded by Joomla is referenced in JAI in System-->System Information-->PHP Information in the "Load Configuration File" item.
After the performed changes restart the php-fpm service.